Box-elevator.



No. 7I6,037. Patented Dec. I6, |902.

F. V. HETZEL.

BOX ELEVATOB.

(Application led Sept. 7, 1901.)

2 Sheets-Sheet I.

(No Model.)

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No. 716,037. 3 I Patented nec. la, |902. I

F. v. HETzEL.

sox :LEV/non.

A'Application led SepiaY 7, 1901.) (N0 Model.) 2 Sheets-Sheet 2.

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T 1 @ggf UNITED STATES y PATENT OFFICE.

FREDERIC V. HETZEL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE LINK BELT ENGINEERING COMPANY, OF'PHILADELPHIA, PENNSYL- VANIA, A CORPORATION OF PENNSYLVANIA.

BOX-ELEVATOR.

` SPECIFICATION forming part of Letters Patent No. 716,037, dated December 16, 1902.

Application filed September 7, 1901. Serial No. 74,624. (No model.)

T all whom t may concern:

Beit known that I, FREDERIC V. HETZEL, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Box-Elevators, of which the following is a specification.

The object of my invention is to prevent the swinging of the carrier of a box or package elevator when the carrier passes over the Io head-wheel of the elevator mechanism.

In the accompanying drawings, Figure l is a front View of the upper portion of a boxelevator, `illustrating my invention. Fig. 2 is a vertical sectional view on the line 2 2,

Fig. l; and Figs. 3 and 4 are views of modifications of 'my invention.

My invention relates to that class of box or package elevators using one or two endless chains, from which are suspended at interzo vals the carrying platforms or studs for receiving the box or package to be elevated.

In the drawings I have shown anelevator of the two-chain type. The chains pass around Wheels at the bottom of the elevator structure and wheels at the top, vand in order to automatically discharge the box from. the elevator the same is carried up to the full height of the elevator and discharged on the down-run,

so as to enable the discharge-fingers to rest 3o under the box andV remove it from the carrying-platform to the discharge-chute. In this type of elevator the carrying-platform tends to swing when carried over the head-wheel,

and if the elevator is run at too high a speed 3 5 the box is liable to slide from the platform as it swings, and consequently the speed of the elevator has to be slow in order to prevent accidents. By my invention I prevent the .swinging of the platforms as they pass over 4o the head-Wheel, so that the speed of the elevator can be materially increased.

A A are two head-wheels having sprocketteeth and secured to'shafts A A', which are mounted in bearings a i on the framework B of the elevatorstructure. The space between the head-wheels A'A is open7 so as to allow the elevator-platforms to freely pass from the upper run to the lower. On the shafts A' A' are gear-wheels a', which mesh with pinions c c on a shaft C, mounted in bearings c on 5o the framework B. On the shaft C is a gear- `wheel c2, which meshes with a pinion c3 on a driving-shaft C', provided with a belt-pulley C2,which is belted to any suitable power-shaft. By this arrangement the two sprocket-wheels 5 5 A A- are Adriven at the same speed.

D D are the two endless chains of the elevator, which pass over thesprocket -head Wheels A A, as shown, and around a suitable tail-wheel at the base of the elevator. 6o

Carried by the chains D D in the present instance are carrying-platforms E, consisting of two arms c e, hung from two pivot-pins cl CZ on the chains D D, which arms are connected together at their lower ends by a bar e'. Se- 65 cured to the arms are two angle-plates e2, which are of sufficient length to form a support for the box to be carried. Below the head-wheels is a shaft F, driven from one of the shafts A A through a train of gearsfff2, 7o and on this shaft are two disks F', which are so proportioned as to form a support or guide for the lower end of each platform as it passes around the head of the elevator. The portions e3 of each platform rest against the pe- 75 riphery of the disks F' during the time the platform passes from one side of the elevator tol the other, thus preventing the platform from swinging, and yet allowing it freedom to accommodate itself, so that it will always 8o hang plumb. Discharge-fingers t' 'Il' are so arranged on the down-run of the elevator that while the platform will be free to pass the discharge-fingers the box will be engaged by the said fingers and transferred to a suitable l chute. Other means of discharging the elevator may be used without departing from my invention, and the means for driving the elevator may also be modified.

It will loe-understood that while I have 9o shown my invention especially designed for elevating boxes the platform may be arranged to carry bags or vother packages in place of boxes, and instead of the elevator having two chains with the platforms be- Y tween them a single chain D may be used, as in Fig. 4, with an overhanging carrier El in the form of a platform or stud. The rotating disks may be driven by a chain from one of the head-shafts instead of by the train of gears shown, if desired.

Fig. 3 is a modification in which in place of a disk having a plain periphery I have shown a sprocket-wheel the spaces between the teeth of which are so shaped as to receive a projection on the under side of each platform.

I claim as my inventionl. The combination in an elevator for boxes and like objects, of an endless-belt elevator, carriers hung from said elevator, head-wheels around which the elevator passes, and a rotating guide against which the base of each carrier rests in passing from one side of the elevator to the other, whereby the swinging ofthe carrier is prevented without tipping the carrier, substantially as described.

2. The combination in an elevator for boxes and like objects, of head-wheels, means for driving the same, endless chains passing around the head-wheels, platforms suspended from said chains, a driven disk mounted so that the lower portion of each platform will bear against the disk in passing from one side of the elevator to the other, substantially as described.

3. The combination in an elevator for boxes and like objects, of two head-wheels, means for driving said head-wheels, an elevator consisting of two endless chains arranged to pass around said head-wheels, platforms suspended from said chains, atintervals,a driven shaft mounted below the head-Wheels, disks on said shaft, said disks being so arranged with respect to the head-wheels that the lower portion of each platform will rest against the disks in passing from one side of the elevator to the other, substantially as described.

4. The combination in a box-elevator,of two head-wheels, means for driving said headwheels, two endless chains mounted on said head-wheels, a series of platforms, each platform consisting of two arms hung from the chains and connected by a. cross-bar and having supports for the box, with ashaft mounted below the head-wheels, and having two disks so spaced that the lower portions of the arms will rest against them as the platforms pass around the head-wheels from one side of the elevator to the other, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FREDERIC V. IIETZEL.

Witnesses:

FLORENCE I-IILLMAN, WILL. A. BARR. 

